Modbus TCP connection datakom d-200 mk2

[m.j.sorokin]

Unfortunately, this did not help. Log after restarting the controller:

DGU_modbus_tcp 22.02.2021 20:47:47
* arg: 1
* string: voltage values
* arg: 2
* number: 157089792
* arg: 3
* number: 154992640
* arg: 4
* number: 154075136
* arg: 5
* number: 0

DGU_modbus_tcp 22.02.2021 20:47:57
* string: modbus read failed Invalid data

DGU_modbus_tcp 22.02.2021 20:48:07
* arg: 1
* string: voltage values
* arg: 2
* number: 155320320
* arg: 3
* number: 154992640
* arg: 4
* number: 155844608
* arg: 5
* number: 0

DGU_modbus_tcp 22.02.2021 20:48:18
* string: modbus read failed Invalid data

DGU_modbus_tcp 22.02.2021 20:48:28
* arg: 1
* string: voltage values
* arg: 2
* number: 154796032
* arg: 3
* number: 154599424
* arg: 4
* number: 156958720
* arg: 5
* number: 0

DGU_modbus_tcp 22.02.2021 20:48:38
* string: modbus read failed Invalid data

DGU_modbus_tcp 22.02.2021 20:48:48
* arg: 1
* string: voltage values
* arg: 2
* number: 155451392
* arg: 3
* number: 154337280
* arg: 4
* number: 155910144
* arg: 5
* number: 0


DGU_modbus_tcp 22.02.2021 20:48:58
* string: modbus read failed Invalid data

DGU_modbus_tcp 22.02.2021 20:49:13
* string: modbus connect failed Operation in progress

DGU_modbus_tcp 22.02.2021 20:49:28
* string: modbus connect failed Operation in progress

DGU_modbus_tcp 22.02.2021 20:49:43
* string: modbus connect failed Operation in progress

(Then the controller stops responding, and restarting the script also does not help, only restarting the controller.)

I do not understand the moment why when using the modbus pull, even with several connections and subsequent disconnections, the connection is restored, and when connecting to the logic machine, the controller completely stops responding?